Timeline for QGIS how to sum a certain vector field inside a polygon and populate a field in the polygon?
Current License: CC BY-SA 4.0
10 events
| when toggle format | what | by | license | comment | |
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| Apr 4, 2019 at 17:07 | comment | added | csk | You only need the RefFunctions plugin to use the intersecting_geom_sum function. You don't need it for the aggregate function, because that's a built-in function. I provided two options that achieve the same thing. The first option is easier to use but it requires a plugin; the second option is more complicated but doesn't require a plugin. Those are the trade-offs. Pick whichever option you prefer. | |
| Apr 4, 2019 at 16:41 | comment | added | PieterB | @csk, I don't know about a plugin, but using an aggregate function in a virtual field, the values are updated in an embedded layer. | |
| Apr 4, 2019 at 15:53 | comment | added | csk | Virtual fields are automatically re-calculated whenever the layer updates, so they would need the RefFunctions plugin for a virtual field calculated with those expressions. If they use a static (regular) field, they don't need the plugin but the fields won't update. | |
| Apr 4, 2019 at 12:53 | comment | added | PieterB | @csk, if you embed this layer into a new project, the results will be embedded too. So, other user does not need those expressions/functions | |
| Mar 30, 2019 at 14:09 | vote | accept | Andrew | ||
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| Mar 30, 2019 at 14:09 | vote | accept | Andrew | ||
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| Mar 30, 2019 at 14:09 | vote | accept | Andrew | ||
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| Mar 25, 2019 at 18:19 | comment | added | csk |
Yes, with multiple users, all users would need the RefFunctions plugin to use the intersecting_geom_sum() function. That's a situation where you would want to use the built-in aggregate functions instead.
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| Mar 22, 2019 at 14:42 | comment | added | Andrew | Currently this is setup as a spatialite database and multiple users should be accessing it. Will all uses need the plugin for the RefFunctions to work? | |
| Mar 21, 2019 at 20:22 | history | answered | csk | CC BY-SA 4.0 |